Symptoms of type 2 diabetes mellitus may be characterized by excessive drinking, excessive eating, excessive urination, weight loss, etc. Some patients may not have any symptoms, and the treatment is the five points of comprehensive management of diabetes mellitus, also known as the quintuple troika. 1. Symptoms of type 2 diabetes mellitus: some patients may not have any symptoms. Typical symptoms of diabetes mellitus are polydipsia, polyphagia, polyuria, weight loss, and also itching of the skin, vulvar itching, and blurred vision. 2. Treatment: five carriages. (1) Diabetes health education: training of diabetes prevention and treatment personnel, continuing medical education for medical personnel, and health care education for patients and their families. (2) Medical nutrition therapy: reasonable control of total calories, choosing low GI food, limiting the intake of sugar, eating less and more meals, and developing good eating habits. (3) Exercise therapy: exercise can increase insulin sensitivity and help control blood glucose and weight. (4) Condition monitoring: monitor fasting blood glucose, postprandial blood glucose, and glycosylated hemoglobin, and also cerebrovascular disease risk factors and complications. (5) Pharmacologic therapy: oral drugs such as insulinotropic agents, biguanides, thiazolidinediones, alpha-glucosidase inhibitors, DPP-4 inhibitors, and SGLT-2 inhibitors; and injectable preparations such as insulin and insulin analogs, and GLP-1 receptor agonists. If symptoms related to type 2 diabetes mellitus appear, it is recommended to consult a doctor in time, formulate an appropriate treatment plan under the guidance of the doctor, and take the medication as prescribed by the doctor.